3 years on mine and works great! 
CTEK Battery Chargers......
Thread Starter
Supporting Vendor
Joined: Jun 2005
Posts: 23,323
Likes: 376
From: Marietta Georgia
St. Jude Donor '06-'07, '13, '15
CTEK Battery Chargers......
The CTEK Battery Charger is the smartest battery charger on the market, period.....Included as an OEM component on many high end cars, it simply cannot be beat when you compare features/price to other chargers on the market. It is outdoor certified, small enough to mount anywhere on your car, dust proof, shock proof, spark proof, and get this-->reverse polarity protected (smart enough to know if you have the red and black wires reversed 
The CTEK is one of the few battery chargers you can leave connected to your battery while it is connected to the car without risk of damaging your vehicles computer. You can leave it connected for months and months without worry of damaging your battery as it is constantly conditioning your battery instead of just keeping it charged.
We have sold hundreds of the CTEK brand chargers for the last few years and have been able to negotiate a great price for an awesome charger.
Check it out at the link below....in stock and ready to ship! Trust me, no other charger on the market even comes close to this one and our price is hard to beat. Lots more information and informative video at the link below.
CTEK Battery Charger
The CTEK is one of the few battery chargers you can leave connected to your battery while it is connected to the car without risk of damaging your vehicles computer. You can leave it connected for months and months without worry of damaging your battery as it is constantly conditioning your battery instead of just keeping it charged.
We have sold hundreds of the CTEK brand chargers for the last few years and have been able to negotiate a great price for an awesome charger.
Check it out at the link below....in stock and ready to ship! Trust me, no other charger on the market even comes close to this one and our price is hard to beat. Lots more information and informative video at the link below.
CTEK Battery Charger
Team Owner
Joined: Mar 2007
Posts: 35,028
Likes: 2,074
From: Right Corner Pocket of Illinois
No-IL Events Coordinator
2026 Corvette of the Year Finalist - Unmodified
2025 C6 of the Year Winner - Unmodified
2020 C6 of the Year Finalist - Unmodified
2020 Corvette of the Year Finalist (appearance mods)
2019 C6 of Year Winner (appearance mods)
2018 C6 of Year Finalist
St. Jude Donor '12 thru '26
Thread Starter
Supporting Vendor
Joined: Jun 2005
Posts: 23,323
Likes: 376
From: Marietta Georgia
St. Jude Donor '06-'07, '13, '15
trust me....no comparison...None at all!!!! (and we sell Battery Tenders also) Just giving to the Honest Skinny.....
More info here.....
Ctek Battery Charger
Jim
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette
Pouria Savadkouei
Drifting
Joined: Oct 2002
Posts: 1,710
Likes: 0
From: Langhorne PA
OK, I'll bite. I'll call you tomorrow.
Thanks,
Dan
Thanks,
Dan
Smaller, smarter, cheaper, weather proof, shock proof.......
trust me....no comparison...None at all!!!! (and we sell Battery Tenders also) Just giving to the Honest Skinny.....
More info here.....
Ctek Battery Charger
Jim
trust me....no comparison...None at all!!!! (and we sell Battery Tenders also) Just giving to the Honest Skinny.....
More info here.....
Ctek Battery Charger
Jim
Thread Starter
Supporting Vendor
Joined: Jun 2005
Posts: 23,323
Likes: 376
From: Marietta Georgia
St. Jude Donor '06-'07, '13, '15
Instructor
Joined: Apr 2005
Posts: 234
Likes: 0
From: Dania,Beach FL.
To all you ctek owners. I have the model US800 hooked to my car for 3 days now. I have not driven the car and the charge indicator is still on. Does it ever switch over to the maintenance charge?
Burning Brakes
Joined: Sep 2007
Posts: 860
Likes: 3
Depending on the charge level when I put the CTEK on, it can take several days to see the green light..
Thread Starter
Supporting Vendor
Joined: Jun 2005
Posts: 23,323
Likes: 376
From: Marietta Georgia
St. Jude Donor '06-'07, '13, '15
The charger does not start maintenance unitl the battery is ready. It is really that smart.
Jim
Instructor
Joined: Apr 2005
Posts: 234
Likes: 0
From: Dania,Beach FL.
i just thought that because I have the smaller US800 instead of the US3300 it might not be up to the job. I heard about CTEK 5 years ago. It sounded so good I purchased it and had it sitting in the garage. then I bought a Vett and I guess it finally came in handy. Had the CTEK before the VETT
Drifting
Joined: Jul 2006
Posts: 1,564
Likes: 4
From: Brookfield Wisconsin
You know the CTEK can be used on ANY car, it was not just designed for a Corvette. 
i just thought that because I have the smaller US800 instead of the US3300 it might not be up to the job. I heard about CTEK 5 years ago. It sounded so good I purchased it and had it sitting in the garage. then I bought a Vett and I guess it finally came in handy. Had the CTEK before the VETT
Instructor
Joined: Apr 2005
Posts: 234
Likes: 0
From: Dania,Beach FL.
Drifting
Joined: Jul 2006
Posts: 1,564
Likes: 4
From: Brookfield Wisconsin
A person sometimes dont know these things on forums, that is why I posted that. Some people think things are specifically made for Corvettes and nothing else that are sold here sometimes.
Melting Slicks
Joined: Aug 2003
Posts: 2,786
Likes: 7
From: Iowa
great products, I own one and need a second. I only wish it would have incorporated a voltmeter and ammeter into the design. not needed, but I just like to be able to know what's going on.
CTEK also makes some larger models of this charger, is there any benefit to going with one of the bigger ones or is the multi 3300 plenty for any automotive use?
CTEK also makes some larger models of this charger, is there any benefit to going with one of the bigger ones or is the multi 3300 plenty for any automotive use?